/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | foam-extend: Open Source CFD
   \\    /   O peration     | Version:     4.1
    \\  /    A nd           | Web:         http://www.foam-extend.org
     \\/     M anipulation  | For copyright notice see file Copyright
-------------------------------------------------------------------------------
License
	This file is part of foam-extend.

	foam-extend is free software: you can redistribute it and/or modify it
	under the terms of the GNU General Public License as published by the
	Free Software Foundation, either version 3 of the License, or (at your
	option) any later version.

	foam-extend is distributed in the hope that it will be useful, but
	WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
	General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with foam-extend.  If not, see <http://www.gnu.org/licenses/>.

Global
	dimensionedConstants

Description
	Dictionary reading and supplying the dimensioned constants used within
	FOAM particularly for thermodynamics.  The values are read from the
	FOAM controlDict and should be changed to run with a different set of
	units from the default SI units.

SourceFiles
	dimensionedConstants.C

\*---------------------------------------------------------------------------*/

#ifndef dimensionedConstants_H
#define dimensionedConstants_H

#include "dictionary.H"

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

namespace Foam
{

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

dictionary& dimensionedConstants();

template<class T>
T dimensionedConstant
(
	const char* switchName,
	const T defaultValue
)
{
	if (dimensionedConstants().found(switchName))
	{
		return pTraits<T>(dimensionedConstants().lookup(switchName));
	}
	else
	{
		dimensionedConstants().add(switchName, defaultValue);

		return defaultValue;
	}
}


// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

} // End namespace Foam

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

#endif

// ************************************************************************* //
